What are some parts of the country that are facing serious soil erosion?

China is facing a serious problem of soil erosion, mainly in the northwestern plains. In the northwestern plains, soil erosion is due to the destruction of vegetation.

What are some parts of the country that are facing serious soil erosion? Mainly rivers, mountain water washed out to form ditches, and there is land loss in places with poor greening.

At present, Shaanxi and Shanxi in the northwest of China are facing severe soil erosion.

Our country has a cloud and a treasure. Shanxi, Shaanxi, Gansu. is facing the problem of soil erosion.

For example, the Northwest region of the United States is facing a serious problem of soil erosion.

Guoguo like Sichuan is facing a severe stamp turn, like the ** or landslide that occurred in Sichuan.

This is a very early problem, and now our country's territory is relatively strict, and the state attaches great importance to this aspect.

The problem of soil erosion must get its own.

This is also to protect the living environment of human beings.

If the land is lost, it is more accurate, but don't lose too much.

Well, some parts of China are facing severe soil erosion, especially on both sides of the Yellow River Basin, and this loss is very serious.

In fact, if there is a serious soil erosion, I think there will be more soil erosion on the Tibetan Plateau.

The main environmental problems facing the world today are climate change, biodiversity destruction, acid rain, land degradation and desertification, the rapid increase of toxic chemicals and toxic gases, and the loss of forests. These environmental problems will affect all aspects of people's lives, causing a series of chain reactions, such as global warming, deforestation, species extinction, marine pollution, ozone layer depletion, wild species reduction, greenhouse effect, etc., will put the ecology in an unbalanced state, people will be retaliated by nature. <>

I believe that many people have felt some of the harm brought by the greenhouse effect, and the most direct feeling of global warming is that the temperature has become very high, and the extreme heat has affected people's normal quality of life. Environmental problems are not just a national problem, they are international environmental problems that need to be brought to the attention of individual countries. Environmental problems will not only affect people's health, but also affect people's living space, and there will be a series of natural disasters, such as sandstorms, grassland degradation, water crises, etc.

The harm caused by environmental problems has permeated all aspects of people's lives, so people need to take the whole world as a unified whole, and they need to follow the laws of nature and take corresponding measures to solve this problem. People need to make reasonable use of resources, and at the same time, they need to recycle resources, they need to meet human conditions, and they need to promote social harmony. With the continuous development of science and technology, technology will also cause a series of environmental problems, such as space pollution, ozone layer depletion, and the consequences are very serious.

Soil erosion is plagued by many countries, and Kazakhstan is a particularly problematic problem. Kazakhstan is not very geographically located, it is located in a desert, the weather is usually relatively dry, and there is not much rain, which is very erosive by the wind. Natural resources are very important to people, and if people do not effectively deal with the relationship between man and nature, it may make the problem of urbanization more and more serious, and will make natural resources in a state of depletion, and people will suffer huge losses.

The main environmental problems facing the world today include desertification, soil erosion, acid rain pollution, and the greenhouse effect. At present, many countries are suffering from soil erosion, among which Kazakhstan is extremely serious, and Afghanistan and African countries near the Amazon basin are also affected by severe soil erosion.

Global warming. Due to the increase in population and the increasing scale of human production activities, the release of carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), chlorofluorocarbons (CFCs), carbon tetrachloride (CCL4), carbon monoxide (CO) and other greenhouse gases into the atmosphere is increasing, resulting in changes in the composition of the atmosphere. The quality of the air is affected, and the climate has a tendency to gradually warm.

As a result of global warming, which will have a variety of global impacts, higher temperatures can melt polar glaciers and raise sea levels by 6 centimetres every 10 years, thus submerging some coastal areas. Global warming may also affect changes in rainfall and atmospheric circulation, make the climate abnormal, and easily cause drought and flood disasters, which may lead to changes and destruction of ecosystems, and global climate change will have a series of major impacts on human life.

Soil erosion is most severe in Kazakhstan.

The environmental problems facing the earth today are mainly caused by the destruction of soil, air pollution, the threat of fresh water, and the reduction of forest area. I think the country with the most soil erosion is Kazakhstan.

1. (The most important natural factor) drought, evaporation is greater than precipitation, deep inland, far from the sea, and it is difficult for ocean moisture to reach. Surrounded by high mountains, it is blocked by the Qinghai-Tibet Plateau.

2. How windy it is.

3. Close to the source of the winter wind (Siberia), the terrain is undulating, and there is no high mountain obstruction, so that the strong wind drives straight in.

4. The vegetation is scarce and the vegetation coverage rate is low.

5. The soil is loose and desert (this is the basis of desertification).

6. The cold current flows through temperature and humidity.

The factors influencing soil erosion are divided into two categories: natural factors and human factors.

Natural factors are the prerequisites for the occurrence and development of soil erosion, which are mainly manifested in:

1.Precipitation; Generally speaking, the greater the precipitation, the more soil erosion;

2.Terrain; Topography is an important factor affecting soil erosion, and the size of slope, slope length, slope shape, etc. have an impact on soil erosion, and the steeper the slope and the greater the surface runoff velocity, the more serious the soil erosion.

3.Soil; Soil is the main object of erosion, so the permeability, erosion resistance and erosion resistance of the soil itself will also have a great impact on soil erosion. In general, the looser the soil, the more susceptible it is to erosion;

4.Vegetation; The larger the vegetation coverage area, the smaller the soil erosion, and vice versa.

Human factors are the main causes of soil erosion, which are mainly manifested in: vegetation destruction (such as indiscriminate reclamation, indiscriminate logging, indiscriminate grazing) and sloping cultivated land reclamation (such as steep slope reclamation, downhill farming, overgrazing), or due to mining and road construction without taking necessary preventive measures, etc., will aggravate soil erosion.

The influencing factors of soil erosion refer to soil erosion, which is basically the same.

The causes of soil erosion are both natural and man-made.

Natural factors. There are four main aspects: topography, rainfall, soil (ground material composition), and vegetation.

Terrain; The steeper the slope of the ground, the faster the flow rate of surface runoff, and the stronger the erosion of the soil. The longer the slope, the more runoff is collected from the surface, and the stronger the erosion force is.

Rainfall. Rainfall that produces soil erosion is generally a heavy rainstorm with high intensity, and the rainfall intensity exceeds the soil infiltration intensity before surface (over-permeability) runoff is generated, resulting in erosion of the ground surface.

Ground material composition.

Vegetation; Forest and grass vegetation that reaches a certain canopy density has the effect of protecting the soil from erosion. The higher the canopy density, the stronger the retention of water and soil.

The human factor is suspected. The irrational use of land by human beings has destroyed the ground vegetation and stable topography, resulting in serious soil erosion.

Destruction of vegetation.

Unreasonable farming system. Mining.

Soil erosion is very harmful, mainly in the following aspects:

1. Decline or even loss of land productivity: The area of soil erosion in the country has expanded to 1.5 million square kilometers, accounting for about 1.6 percent of the country, and 5 billion tons of soil are lost every year. The loss of nitrogen, phosphorus and potassium fertilizer in the soil is estimated to reach 40 million tons, which is equivalent to the amount of chemical fertilizer used in China in a year, equivalent to an economic loss of 2.4 billion yuan.

The Yangtze River and the Yellow River lose 2.6 billion tonnes of sediment every year. It contains the same amount of organic fertilizer as 50 fertilizer plants with an annual output of 500,000 tons. It is no wonder that some people say that the Yellow River does not carry sediment, but the blood of the Chinese nation, and that such a large area of fertile soil and nitrogen, phosphorus, and potassium fertilizers are washed away, which will inevitably lead to a decline in land productivity or even a complete loss.

2. Silted rivers, lakes and reservoirs: Although the soil erosion in Zhejiang Province is relatively light, the riverbeds of 8 water systems in the province have generally increased by meters, and the length of inland navigation is now 1,000 kilometers less than in the 60s. For example, before 1958, wooden boats with a deadweight of 10 tons could pass from Shengxian County to Cao'e River.

Due to too much silt in the riverbed, it has now been forced to suspend navigation, and the surface water resources have turned into sand, and the aviation construction company has been changed to "Yellow Sand" company.

Dongting Lake in Hunan Province has too much sand due to excessive wind and sand, and more than 1,400 hectares of sandbar are exposed every year. The lake area shrank from 3,915 square kilometers in 1954 to 2,740 square kilometers in 1978. What's more serious is that the water level of Dongting Lake is 3 meters higher than the land around the lake, which loses its role of flood distribution of the Yangtze River.

This is a very serious problem.

Soil erosion is also serious in several river basins in Sichuan Province, including the Jialing River, Fujiang River and Tuojiang River, with more than 20% of the sediment accumulating in reservoirs. According to relevant experts, if this continues, in another 50 years, some reservoirs in the Yangtze River basin will be silted up or turned into sediment reservoirs.

3. Polluted water quality affects ecological balance: At present, a prominent problem in China is the serious pollution of water quality in rivers, rivers and lakes (reservoirs). Soil erosion is an important cause of water pollution. The Yangtze River is being polluted.

It can be seen that soil erosion is not only very harmful, but also has long-term effects. The magnitude of the problem must be fully estimated.

What are the dangers of soil erosion?

1. Wash away the land and destroy the cultivated fields. Especially in the hilly area, the cultivated land is mainly distributed on the ridges above the ditch line, and due to the heavy rainstorm runoff, the area of the gully is getting larger and larger, and the slope surface and cultivated land are getting smaller and smaller.

2. Soil erosion and fertility decline. According to an approximate ratio, the loss of surface soil contains almost 20 kilograms of nitrogen, phosphorus and potassium per tonne. Soil erosion not only reduces the main nutrients of nitrogen, phosphorus and potassium in the soil, but also reduces the content of trace elements such as boron, zinc, copper, manganese and iron in the soil.

It has been determined that the loss of sloping cultivated land is 1 3 1 2 less trace elements than that of the non-lost terraces, which seriously affects the yield and quality of crops.

3. Ecological imbalance, frequent drought and flood disasters. Soil erosion destroys land, vegetation and other ecosystem elements, leading to ecological imbalance, which in turn leads to frequent droughts and floods.

Reducing or even losing land productivity; silted rivers, lakes and reservoirs; polluted water quality affects ecological balance, etc.

Dear Hello I am glad to implicitly answer the following seven kinds of harm caused by soil erosion: 1. Destroying land resources, encroaching on farmland, and endangering the survival of the people with potatoes. 2. Weaken land fertility, cause loss of land nutrients, and exacerbate the occurrence of drought.

3. Sediment silts up the riverbed, aggravating flood disasters. 4. Sediment accumulation reservoirs and lakes reduce the comprehensive application function. 5. The increase of sediment will affect shipping and destroy the traffic safety of the water number.

6. The vicious circle of soil erosion and poverty develops simultaneously. 7. The increase of sediment causes pollution of river water sources.

Soil erosion (soil erosion) is smaller than soil and water loss, foreign countries mostly use soil erosion, soil erosion is proposed by the Chinese, most of the time before the spring book stares at the two words, the concept is relatively close, can be substituted for each other. Soil and water conservation is the process of controlling soil erosion or controlling soil erosion and soil erosion, and carrying out ecological restoration.

The areas with serious desertification in China are mainly distributed in the northwest region.

The main causes of land desertification are:

1. Excessive wood-mining.

2. Overgrazing.

3. Excessive reclamation.

4. Unreasonable use of water resources.